Improvement in harvesters



line.

PATENT OFFICE.

JEEEMIAH MITCHELL, 0E GosPoRfr, NEW YORK.

IMPROVEMENT IN HARVESTERS.y

Specification forming part of Letters Patent No. 20,813, dated July 6, 1858.

To all 'whom it may concer/n:

Be it known that I, JEREMIAH MITCHELL, of Gosport, Niagara county, New York, have invented certain new and useful Improvements in Harvesters; and I do hereby declare thatthe following is a full, clear, and eXact description of the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon.

The nature of my invention consists in the arrangement of the devices hereinaftermentioned for making a tiltingjack, to be attached to the cutter-bar of reaping-machines for the purpose of regulating the cut, as will be described.

In order that those skilled in the arts may construct and use my invention, I will proceed to describe its construction and operation.

In .the accompanying drawings it will be seen that A represents the body or frame ot' the jack. l

C is the wheel which supports the machine.

D is a rack-bar, one end of which is secured to the wheel C, as seen in Figure 2 in dotted Said rack-bar slides horizontally and works in a T-shaped groove in the frame A.

E is a pinion having its bearing in the uprightpieces, bb. Said pinion works in the rackbar D, and operates it, either lowering or elevating it, as desired.

F is astationary circular catch-plate secured rmly to one ofthe uprights in which the pinion E has its bearings, the shaft of pinion E passing through its center.

Gr is the handle of the jack employed to elevate or depress the cutters, being secured to the shaft ot' pinion E and working closeby the side of the catch-plate F.

H is a chuck-bar, being in the forni seen in Fig. 3. The chuck on the lower extremity of the bar H passes through the lever or handle G, and works in a slot in handle G and between the square cogs on the catch-plate F,

. by this means securing the handle, and consequently the pinion E and rack-bar D, at any desired point.

I is a projection or llange by ineans'of which the `jack is secured to the reaper. a is a spring upon the chuck-bar H, one end of the spring beingsecured to the handle land the other, operating against a pin in the chnck-bar, keeps it down to its place.

In the operation ot' this invention the-jack is secured to the cutter-bar of any reaper by means ot' screws or pins, which pass through the flange marked l and into the cutter-bar. rIhe wheel C revolves upon the ground, thejack and the cutter-bar both rrstingon said wheel (l, this wheel being secured to the rack-bar D, and rack-bar D heilig operated by means of pinion E and handle G, it will be seen that the cutter-bar is very conveniently lowered or elevated by simply turning the handle'G, which moves the wheel (l forward or backward, thereby tilting the cutter-bar, which is secured at any desired inclination by means ot' the chuck-bar H, operating in the catch-plate F.

Having thus fully described my invention, what I claim as new, and desire to-secure by Letters Patent, is

Combining with the cutter-bar of a harvesting-machine,in the manner herein described, the tilting -jaw, constructed as describedthat is to say, having the revolving handle G, springchuck H, stationary catch-plate F, pinion E, and rack-bar D,in combination with the wheel C, these several parts being constructed and relatively arranged with respect to each other and to the cutter-bar, and operating in the manner and for the purpose set forth.

J EREMIAH MITCHELL.

Witnesses: y

G. W. HILDRE'IH, S. A. CHARLES. 

